RED WITCH FUZZ GOD II PCB layout

[jondog]

I've drawn out the PCB layout for the Red Witch Fuzz God II. I haven't had a chance to do a layout for a build so thought I'd post it if anyone ones to take a swing at it. One of my favorite fuzz pedals and I haven't found any schematics or layouts for it on the internet yet.
http://youtu.be/KpEW_gnJkk0



Q1-BC109B
Q2-BC109C

R1-1K
R2-100r
R3-1K
R4-180r
R5-1K
R6-470r
R7-100K
R8-1.5m
R9-22k
R10-100k

D1-GF1A

VR1-A25K
VR2-B1M
VR3-A100K
VR4-A100K
VR5-10K (trim pot)

C1 2.2uf
C2-22uf
C3-100n
C4-2.2n
C5-100n
C6-56pf
C8-100uf
C1s-1n

2x SPDT toggle switch
1x DPDT foot switch
1x 3PDT foot switch

[negativefx]

Great trace!

Can you confirm the pinout on those ribbon cables? I'm guessing it's this but not sure:
Cable = 1 2 3 4 5 6
Switch PCB top row = 1 3 5, bottom row = 2 4 6

[jondog]

I'm pretty sure that's the order. Those were a pain because I had to unsolder the I'd've connector and it didn't come off easily.

[IvIark]

Yes nice job on the trace

[rocket88]

Fantastic. I don't know how I missed this one. Now we need to convert it to vero too.

[Heath]

Dooooooo iiiiittttttttttt

[rocket88]

I gladly will if someone can take the trace and make a schematic.

[dexxyy]

I was going to have a go at this tonight but I`m not seeing where the switches connect to the board so basically the trace is incomplete. As it stands the input and output jacks connect to nothing, I think the footswitch pcbs must be double sided too cos the cap on the wrath switch appears to go nowhere as does the centre lug of the awaken switch. The wrath switch pcb also has 3 solder points connected to nothing and I really don't see the need for dpdt switch in this configuration as a spdt switch will do unless there are traces missing to the second pole.

[jondog]

The PCB is laid out from the actual PCB and those are the switches the pedal has. There is Ribbon cable connecting the seitch PCB's to the board with small IC connectors. There are 6 solder pads on the main board for each switch, and they corrospond with the 6 solder pads for each switch PCB. As for the Input and output jacks, the wires connect to the tip connection on a jack.

[dexxyy]

Yes but without knowing which lugs on the switches connect to which points on the board then the circuit can`t be completed. I think there has to be tracks on the underside of the switch pcbs too as it doesn`t make sense the way it is laid out. I know the input and output wires go to the jack tips but the other ends just stop abruptly, it looks like they probably connect to the switch via the ribbon cable which would mean the actual circuit input and output connect elsewhere.

[jondog]

It may be difficult to see it the way I do because I had the actual PCB in hand. But where the input and Output connect to those 6 solder pads , that is a connection for a 6 pin connector with ribbon cable to the switch pcb which has the corrosponding 6 solder pads for another connector, which then has traces running to each lug on the switch. It was tough to draw exactly. There could be an error there still, but either way it's a regular true bypass switch. This is not a typical DIY  layout, just a drawing of the PCB from the pedal. Which is why I posted it here, if anyone wants to try and make up a proper layout. It was very tough to remove the connectors and switches to get a good look at what was underneath.

[jondog]

I drew up a schematic, hopefully it's right.

[rocket88]

i'll draw up a layout and we'll see if the schematic is right. i got my fingers crossed that it is, so thanks for the legwork so far.

[jondog]

Cool, I forgot to draw in the 1.5m resistor to ground at the input. Jumper on the top row going to snd row not needed.

[jondog]

CONTENTS DELETED

The author has deleted this message.

[Alex]

At first glance there is a 100n capacitor missing from Volume 3 to R5 (470R) and you should swap C2 & C3

[jondog]

good eye!, I rushed this (got a lot of projects on the go.....) What difference will swapping c2+3 make. I appreciate all adjustments and changes, just throwing this layout out there. Made th changes to it.

[rocket88]

Could be wrong, but here's how i did it.

[negativefx]

Rocket,

Sputta 3 to two locations, no sputta 2 connection.  Should that Sputta 3 under the 9v be Sputta 2 instead?

Wrath 1 to ground?

Wrath Sw 1 to 2, 3 to 4, 5 to 6?  Edit: bad pinout numbering.  Wait a minute... spdt?  No dpdt needed for Wrath switch?  Cool!

Nice and compact though, love it.  

[rocket88]

I'll fix the sputta switch. One of them should be sw1 and the other sw2. I deleted the wrong one when moving things around. I think it can be done with all sp switches, but I could be wrong. *fingers crossed* it's good to go, cause this would be a great fuzz to have. I tried to keep the layout as compact as possible, so I hope it's not too cramped.